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发明申请
US20080130807A1 RF Receiver With NLMS Channel Estimator And Method Therefor 有权
RF接收机与NLMS信道估计器及其方法

RF Receiver With NLMS Channel Estimator And Method Therefor
摘要：
An RF receiver (12) includes a channel estimator (52). The channel estimator (52) includes a channel estimation filter (82), error signal generator (84), and normalized Least-Mean-Square (NLMS) filter-definition generator 36. The filter (82), error generator (84) and NLMS filter-definition generator (86) function together as an adaptive estimator. An error signal (90) is formed with a received signal (48). The filter (82) filters an estimated transmit signal (74) constructed from lower confidence decision data (66) and higher confidence known preamble data (30″). .An adaptive filter definition (94) is formed in a feedback, loop which minimizes correlation between the estimated transmit signal (74) and the error signal (90). A convergence signal (122) is modulated in synchronism with the changes between lower and higher confidence data in the estimated transmit signal (74).
摘要（中）：

RF接收机（12）包括信道估计器（52）。 信道估计器（52）包括信道估计滤波器（82），误差信号发生器（84）和归一化最小均方（NLMS）滤波器清除发生器36.滤波器（82），误差发生器（84）和 NLMS滤波器定义生成器（86）一起作为自适应估计器。 误差信号（90）由接收信号（48）形成。 滤波器（82）对由低置信决定数据（66）和较高的置信度已知前导码数据（30“）构成的估计发射信号（74）进行滤波。 自适应滤波器定义（94）形成在反馈环路中，其使估计的发射信号（74）和误差信号（90）之间的相关性最小化。 收敛信号（122）与所估计的发射信号（74）中的较低和较高置信度数据之间的变化同步地被调制。

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